This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "xylophone.h"
#include<bits/stdc++.h>
using namespace std;
void solve(int n){
vector<vector<int>>save(n + 1, vector<int>(2));
for(int i = n; i > 2; i--){
save[i][0] = query(i - 1, i);
save[i][1] = query(i - 2, i);
}
save[2][0] = query(1, 2);
for(int I = 1; I <= n; I++){
vector<bool>used(n + 1, false);
vector<int>ans(n + 1);
bool is_ans = used[1] = true;
if(I > (ans[I] = 1)){
if(used[ans[I - 1] = save[I][0] + 1]){
continue;
}
used[ans[I - 1]] = true;
for(int i = I - 2; i > 0; i--){
if(save[i + 2][0] == save[i + 2][1]){
if(ans[i + 1] > ans[i + 2]){
ans[i] = ans[i + 1] - save[i + 1][0];
}
else{
ans[i] = ans[i + 1] + save[i + 1][0];
}
}
else if(save[i + 1][0] == save[i + 2][1]){
if(ans[i + 1] > ans[i + 2]){
ans[i] = ans[i + 1] - save[i + 1][0];
}
else{
ans[i] = ans[i + 1] + save[i + 1][0];
}
}
else{
if(ans[i + 2] > ans[i + 1]){
ans[i] = ans[i + 2] - save[i + 2][1];
}
else{
ans[i] = ans[i + 2] + save[i + 2][1];
}
}
if(ans[i] < 1 || ans[i] > n || used[ans[i]]){
is_ans = false;
break;
}
used[ans[i]] = true;
}
}
if(is_ans && I < n){
if(used[ans[I + 1] = save[I + 1][0] + 1]){
continue;
}
used[ans[I + 1]] = true;
for(int i = I + 2; i <= n; i++){
if(save[i - 1][0] == save[i][1]){
if(ans[i - 1] > ans[i - 2]){
ans[i] = ans[i - 1] - save[i][0];
}
else{
ans[i] = ans[i - 1] + save[i][0];
}
}
else if(save[i][0] == save[i][1]){
if(ans[i - 1] > ans[i - 2]){
ans[i] = ans[i - 1] - save[i][0];
}
else{
ans[i] = ans[i - 1] + save[i][0];
}
}
else{
if(ans[i - 2] > ans[i - 1]){
ans[i] = ans[i - 2] - save[i][1];
}
else{
ans[i] = ans[i - 2] + save[i][1];
}
}
if(ans[i] < 1 || ans[i] > n || used[ans[i]]){
is_ans = false;
break;
}
used[ans[i]] = true;
}
if(is_ans){
for(int i = 1; i <= n; i++){
answer(i, ans[i]);
}
return;
}
}
}
}
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